. . "段志煌" . "段志煌" . "Zhihuang Duan" . "Duan" . . "C."@en . "Tuan"@en . "zhi Duan zhi huang" . "Zhihuang" . "zhi" . "Duan zhi huang" . "Francis C. Tuan"@en . . "段志煌" . "Francis"@en . . .